Hoisting-bucket.



E. E. BRSIUS.

HOISTING BUCKET.

APPLIUATION FILED AUG.14, 1912.

Patented Feb. 17, 1914.

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E. E. BROSIUS.

HOISTING BUCKET.

APPLIGATION FILED AUG.14, 1912.

1 ,087,1 O5 Patented Feb. 1'?, 1914.

B SHEETS-SHEET 2.

o@ o @www Q WITNESSES INVENTOH E. E. BROSIUS. HOISTINGBUGKET. APPLIGATNFILED AUG. 14, 1912. y 1,087,105.l 'Patented Feb. 17, 1911i 3SHEETS-SHEET 3.

WITNESSES INVENTOR fw fg. Cmm,

EDGAR E. BROSIUS,`OF PITTSBURGH, PENNSYLVANIA.

HOISTING-BUCKET.

Specification of Letters Patent.

Application tiled August 14, 1912.

Patented Feb. 17, 1914.

serial No. 715,016.

To all whomr it may concern Be it known that I, EDGAR E. BRosIrs,--

a resident of Pittsburgh, Allegheny county, Pennsylvania, have inventeda new and useful Improvement in Hoisting-Buckets, of which the followinga full, clear, and exact description. reference being had to theaccompanying drawings, I, forming part of this specification, in which-Figure 1 is a side elevation of ahoisting bucketembodying my invention;Fig. 2 vis an end view of the same;- Fig. 3 is a detail sectional view,showing certain of the parts; Figs. et* and 5 are detail viewshereinafter more fully described; Figs. 6 and 7 are si'de elevationsshowing the bucketin opened positions; Fig. 8 is a plan view of thebucket with the parts closed; and Figs. 9 and 10 are detail views.

My invention has relation to hoisting buckets ofthe clam shell type; andis de signed to provide a single line bucket which can be operated witha very much less amount of head room than has heretofore been required.

A further object of my invention is to provide [a bucket of this type,which is simple and durable in its construction; and which is capable ofexertingl a powerful diggingaction in closing. .2'

The nature of my invention will be best understood by reference to theaccompanying drawings, in which I have shown the preferred embodimentthereof, and which 35- will now be described, it.being premised,however, that various changes can be made in the details of constructionand` arrangement of lthe parts without departing from the spirit andscope of'my invention as deined in the'appended claims. v

In these drawings, the numerals 2 and 3 designate the two 'sections ofthe f bucket, each section having at the inner upper edge portionthereof, at each side, an upwardly projecting bracket arm 4 rigidlysecured thereto and formed with a pivothead 5 at its upper-"'end looselyengaging a central transverse Shaft 6. In the particularconstruction'shown, this shaft 6 is not continuous, but consists of twostub ends 6a, with a rigid connecting member 6" between the sections,and carrying the central shaft section which is marked 6. The shaft may,however, be continuous, 'and even in vthe construction shown is to alleects and purposes continuous. The bucket sections 'are also swung attheir upper outer corner portions, at each end, from their respectivelinks 7 and 8, through the medium of the transyerse rods or shafts 9.The links 7 and 8 extend obliquely upward at each end of the bucket in aconverging direction, the upper end portions of the links 7 being bentor turned 'horizontally as shown at 7, and the upper ends of the links 8being pivotally connected to the extremities of these horizontalportions through the mediulnof the/rod or shaft 10.

11 designates upwardly diverging braces connected at their lower ends tothe central upper outer portion of one of the bucket sections and attheir upper ends to the horizontal portion 7L of the brace members 7 12designates a cross-head, which s movable vertically in the space belowthe transverse portions 7a of the links 7, andupon which 'are journaledthe two sheaves oi` pulleys 13. Y

14 is the suspending rope or cable, which is provided with the hookblock 15 atits upper end for the attachment of a crane hook, and whoselower end portions are carried underneath vthe respective wheels 13 vandare thence made fast to the lnembers 7 a in any suitable manner, asindicated at 16. The cross-head is also provided at each end with awheel or other bearing 17. Chains 18, or other exible members, pass overthe pulleys, and have their diverging lower ends connected to thebrackets or plates 19 se cured to the bucket sections.

The cross-head is connected with the central shaft 6 through the mediumof a link or toggle device composed of the two members 20 and 21. Thesetwo members are hinged or pivotally connected at their adjacent ends, asshown at 22, the vther end of the member 20 being sleeved on a shaft 23carried by the cross-head` and the lower end of the lower member beingsleeved on the shaft 6. The lower member 21 has a huh portion 24, formedwith a locking shoulder 25, which is .adapted to be engaged by a latchhook 26 secured to the shaft 23, as most clearly shown in Fig. 3. Thislatch member 26 is adapted to be forcedinto latch engagement with theshoulder 25 by means of a roller 27 which is journaled 'on a link 28,which is pivotally mounted in a slot 29 of the member 21. The shaft 30of the roller 27 preferably has slotted bearings,

as indicated at 31 in the link 28. The link .28 is connected at itsouter end to a pin 35,

o'the projecting end of which is attached a trip lever 34. inasmuch asthe roller QT is carried by 'the toggle members 21, it will be readilyseen that as the parts approach near the positions 'shown in Fig. 3. theroller 27 will forcibly .engage .the latch 26 to cause its latchingengagement with theshoulder 25. An upward pull on the lever 34, however,frees the roller from its holding engagement with the latch.` Theslotted bearings for the shaft 30 prevent undue bending.- 32 is a stopprojection on the hub portion of the latch, and which is adapted- 4tocon tact with the'hub portion Q4, when the parts are in the' positionshown in Fig 3.

The operationV is as follows: Fig. 6 shows the positions of the partsafter the bucket has been dumped, and when it wis ready to be loweredfor another load. The crosshead has now been elevated to the positionshown, and the bucket actions are wide open The bucket is how loweredonto the material to be loaded, the cross head moving downwardly towardthe shaft 6 to the position shown in Fig. 7, and the toggle device.

assuming the folded position also shown" in this figure. The liftingpower is then a-pplied to the hook block 15 and hoisting cable 14, andas the cross-head rises, the bucket sections turn on their supports onthe shaft 6 and on the links 7 and 8 until'they come to the 'closedpositions shown in Fig. 1. During this closing action, the bucketsections have a powerful digging action. due to the nature of theleverage applied thereto. The tripping lever 34 is next actuated,thereby moving the roller 27 out of holding contact with the latch 26.As soon as the latch is released the weight immediately causes theAbucket sections to open andA discharge their load. It will be notedthat the ends of the flexible chains' are attachedto the bucket sectionsat points which are so locat'ed'that, as the bucket opens, they moveinwardly and downwardly about the axis of the rods 9. They thereby exerta pull of increasing leverage on the bucket sections in a directiontending to restrain the opening movement. This action is sufficient tosteady the action and'prevent too sudden opening.. y

The advantages of my invention will be apparent to those skilled in theart. Owing to the freely open space between the portions 7 of the links7, the hook block and hoisting cable can move freely therethrough anddown to a position closely adjacent to the shaft G.' The opening andclosing movement of the bucketI is effected by a relatively shortvertical movement of the cross-head. Therefore, the operation of thebucket requires very much less heal room tha i has been required with,the types of ',.tlckets heretofore in use.

` The entire construction is simple and durable; the manner ofattachingthe cross-head to and disengaging it fro-m the lifting shaft 6.is exceedingly 'simple and effective, the toggle device acting to guideand steady the movements of the'parts.' The form of the links 7,71-'gives an effective method of suspending the bucket sections so that.they can 'exerta powerful leverage action.` This construction alsoreduces the total height of the bucket, and provides for thefreeoperation ofthe cable and cross-head. The flexible members 18 providesimple means for preventing a too viclentopening of the bucket and fortaking up shocks. I do not consider, however, that these. are anecessary element of my invention, as Lne bucket will operate in a verysatisfactory manner vwithout them.

It will be readily understood by those skilled in the art that thedetails of construction, such as the exact form of'the lock, etcl, maybe varied without departing fromthe spirit and scope of my invention asdefined in the appended claims.

I claim :ef

1. A hoisting bucket comprising a central lifting rod or shaft, twobucket sections pivotally swung from said rod or shaft at their upperinner corner portions, and link members pivotally connected with theupper outer corner portions of the bucket sections, said link membersconverging upwardly, and those at one side terminatingin rigid laterallyor horizontally bent portions to which the upper ends. of the linkmembers at the opposite side are pivotally connected at one side of thevertical center of th'e bucket; substantially as described. i

2. A hoisting bucket having its bucket sections suspended at their upperinner corners from a central lifting rod or shaft, and having theirouter corner portions swung upon depending links, the links at one. sidehaving rigid horizontally bent end portions extending past the verticalcenter of the bucket and to'which the upper ends of the links at theopposite side are pivotally connected at one side of the vertical centerof the bucket; substantially as described.

3. A hoisting bucket having its bucket sections suspended at their`upper inner corners from a central lifting rod or shaft, and. havingtheir outer corner portions swung upon depending links, the links at oneside having horizontally bent end v'portions extending past the verticalcenter of `the bucket and towhich the upper ends of the vlin1 s at theopposite side are pivotally connect d, and there being a free open spacebet'fxeen said horizontally bent portions together Vith a hoisting cablehaving a hook block avits upper end. said block being Amovable downthrough the said open space; substantially as described.

4. A hoisting bucket, comprising a central l lifting member, bucketsections connected sections are pivoted, a flexibly suspended .and awayfrom the lifting member, and havthereto, Aa jointed frame to which thebucket sections are pivoted, a flexibly suspended cross-head movablewithin the frame toward and away from the lifting member, a hook block.at the upper end of the crosshead suspension, said hook blockbeingmovable through the frame of the, bucket to a posi-Y tion adjacentto the cross-head, said cross head having means for engaging anddisengaging the lifting,y member, and guiding means for the crosshead,said guiding means forming a connect-ion between the cross-head andliftinginember independent` of the frame and bucket sections;substantially as described.

5. A hoisting bucket, comprising a central lifting member, -bucketsections connected thereto, a jointed frame to which the bucketcross-head movable within the. frame toward J'ng-means for engaging'anddisengaging the ame, anda jointed guide connecting the ess-head' withthe lifting member, said .uitlehaving its joint constructed to flex toermit the cross-head to move laterally but to''hold said4 headsubstantially rigid with respect toendwise movement; substantially\asfdescribed. y

hoisting bucket comprising a centrai lifting member, bucket sectionsconnected thereto, a jointed frame to which the bucket sections arepivoted, a cross-head, a

ble suspending the cross-head, a khook pck at`.the upper end of thecable, said ok'fblock. being movable through the frame-,toa positionadjacent tothe cross 1 1',e d, andflatch means for engaging the'ibssfhead with thc lifting member; subst-an tillyas described.

n 7 A hoisting bucket comprising a central `ifting `rrod or shaft, twobucket sections gung lfromvtheir upper inner corners from e said `rod orshaft, connected links on hich the upper outer corner portions of the.sectio'nsareswung, a cross-head having j'tIatch-device adapted to engageand-disengage said rod or shaft, and a flexible shockbsorbing memberconnected to the sections and engaged with the cross-head. the endsofsaid device, being att-ached to the bucket sections at points which movedownwardly and inwardly about the axis of the outer pivots of saidsections when the. latter open; substantially as describeds .A hoistingbucket comprising a central lifting member, bucket sections connectedthereto, a jointed frame to which the bucket #actions are pivoted, across-head, latch means for engaging the cross-head with the liftingmember, and a flexible shock-absorbing member engaged with thecross-head and attached to the bucket sections at opfreely to a positionadjacent to the'lifting rod or shaft, and a hoisting cable having ahookblock at its upper end, saidfhook block being movable through4 thejointed or link frame: substantially-asdescribed.

10. A hoisting bucket having 'a central lifting rod or shaft, a bucketSection pivoted `thereto, a cross-head movable to a position adjacent tothe lifting rod or shaft, anda toggle device having one member connectedto the cross-head and the other member connected to the -lifting rod orshaft; substanf tially asv described.

1l. A. hoisting bucket comprising a central lifting rod or shaft, bucketsections swung therefrom, a cross-head movable to a position above andadjacent to the lifting rod or shaft, `a latch hook carriedby thelifting head, a cooperating latch device carried by the lifting rod orshaft, and a toggle device connected to the cross-head and the liftingrod or shaft; substantially as described. 1Q. A hoisting bucketcomprising a central lifting rod or shaft, bucket sections swungtherefrom, a cross-head movable toa position above and adjacent to theliftin or shaft, a latch hook carried by the lifting head, a cooperatinglatch device carried by the lifting rod or shaft, and a toggle deviceconnected to the cross-head and the lifting rod shaft, said toggledevice having means for controlling thc operationof the latch;substantially as described.

13. A hoisting bucket comprising a central lifting rod or shaft, bucketsections swung therefrom, a cross-head movable to a position above andadjacent to the lifting rod or shaft, a latch hook carried by the crosshead, a coperating latch device carriedby the liftingrod or shaft, and atoggle device` rod:

connected to the cross-head and the lift-ing rod shaft, said toggledevice having means for controlling the operation of the latch, togetherwith a tripping lever carried by said toggle device; substantially asdescribed.

14. A hoisting bucket comprising a central lifting rod or shaft, bucketsections swung therefrom at their upper inner end portions, connectedlinks to which the upper outer end portions of the sections arepivotally connected, a cross-head movable-vertically into a positionbetween the sections when the latter are open, and a lifting cableconnected to the cross-head and having a hook block at its upper end,said hook block being movable downwardly between the connected links;substantially as described.

15. A hoisting bucket comprising a central lifting rod or shaft, bucketsections swung therefrom, a cross-head movable to a posi tion above andadjacent to the lifting rod or shaft, a latch hook carried by thelifting head, a coperatinglatch device carried by the lifting rod orshaft, and a toggle device connected to the cross-head and the liftingrod shaft, and a roller mounted 'on the toggle device and arranged toforce the latch hook on the lifting head into engagement with thecoperative latching device, the shaft of said roller having a rollingbearing; substantially as described.

16. A hoisting bucket, comprising a central lifting member, bucketsections pivoted thereto, a jointed frame towhich the bucketsections arealso pivoted, a cross-head, latchmeans for engaging the cross-head withthe lifting member, and a shock-absorbing means att-ached to the bucketvsections at points which move downwardly and inwardly about thepivot-al connections of the sections with t-he frame when the sectionsopen, said beingalso connected shock-absorbing means the bucket;substanto a' lifting element f tially as described.

17. A hoisting bucket having a central lifting member, two bucketsections pivotally swung at their upper inner corner portions from saidmember, link members pivot-- ally connected with the upper outer cornersof said sections at their lower ends and with each other at their upperends, a cross-head over the lifting member and movable toward and fromthe same, llatch means carried by thecross-head for engagement with thelifting member, and a flexible member engaged with the cross-headat itscentral ortion and connected at its end portions with the bucketsections through lever arms thereof which exertfan increasing closingpull on the said sections as the latter oper substantially' asdescribed.

In testimony whereof I have hei'euntonet my hand.

EDGAR E. BROSIUS.

Witnesses J nssn B. HELLER,

GEO. B. BLEMING.

